html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-image: url(../img/devise_bg.png);
  background-repeat: no-repeat;
  background-size: cover;
  color: #333;
}

.app-login {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 460px;
  height: 400px;
  padding: 10px;
  background-color: #fff;
  text-align: center;
  border-radius: 4px;
  box-sizing: border-box;;
}

.center-block {
  padding: 0 20px;
  margin-top: 85px;
}

.login-logo {
  position: relative;
}

.login-logo::before {
  width: 228px;
  height: 62px;
  font-size: 28px;
  line-height: 62px;
  color: #fff;
  background-color: #5c7dff;
  border-radius: 31px;
  display: block;
  position: absolute;
  content: '毛嗑羊';
  top: -42px;
  left: 106px;
  box-shadow: 0 0 12px 0 rgba(0,0,0,.2);
  -webkit-border-radius: 31px;
  -moz-border-radius: 31px;
  -ms-border-radius: 31px;
  -o-border-radius: 31px;
}

.login-footer {
  font-size: 14px;
  width: 100%;
  position: absolute;
  bottom: 0;
}

a {
  text-decoration: none;
  color: #333;
  background: none;
}

@media (min-width: 768px) {
  .app-login {
    min-width: 460px;
  }
}

#loginBtn {
  width: 100%;
  margin: 10px 0;
}

@media (max-width: 479px) {
  .app-login {
    width: 300px;
    height: 360px;
  }
  .login-logo::before {
    left: 25px;
  }
}
